accelerometer pedometer

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Ios screen rotation and shaking

The built-in accelerator is one of the coolest features of a smartphone. ios can use this small device to know how the user holds the mobile phone and whether the user has moved the mobile phone. ios uses the accelerator to process automatic rotation, in addition, many games use it as a control mechanism. It can also be used to detect shaking and other sudden movements. This feature has been further expanded since iPhone 4 and includes a built-in gyroscope, it can be used to determine the angle

[Based Android] Android sensor introduction (1) Acquisition of gravity sensor Acceleration

The instructor of the fetc project proposed a new requirement. He wanted to show the user's current movement direction in the game map. If he used GPS, it was obviously unreliable, so he thought of the powerful Android sensor... Many mobile devices have built-in sensors. Android abstracts these sensors through the sensor and sensormanager classes, and these sensors can be used by Android devices. 1. Sensor class The SDK only has one sentence to introduce "class representing a sensor. use g

Windows Phone 7 tips (7)

1. The standard gestures in Windows Phone 7 are as follows: There are also multiple touch as follows 2. the acceleration sensor. When we place the mobile phone on the desk (screen down), the built-in accelerometer on the Windows Phone device will sense a downward acceleration, that is, the gravity acceleration we learned in the physics textbook is expressed as (0, 0, 1) with a vector). The vectors generated when the screen is placed differen

Android basics: What is Android?

on OpenGL ES 1.0 specifications (optional hardware acceleration) SQLiteFor Structured Data StorageSQLite: Structured Data Storage Media SupportFor common audio, video, and still image formats (MPEG4, H.264, MP3, AAC, Amr, JPG, PNG, GIF)Media Support: general audio, video, and image formats (MPEG4, H.264, MP3, AAC, Amr, JPG, PNG, GIF) GSM telephony(Hardware dependent)GSM: (hardware-dependent) Bluetooth, edge, 3G, and WiFi(Hardware dependent) Camera, GPS, compass, and

Windows Phone 7 peripherals and gravity sensing

radio are implemented.1.2 vibration implementation for Windows Phone 7 The namespace must be referenced to achieve the vibration effect. using Microsoft.Phone.Devices; To achieve vibration, you only need one sentence: VibrateController.Default.Start(TimeSpan.FromSeconds(2)); This line of code indicates that the vibration is measured in seconds (fromseconds), and the vibration is two seconds. Similarly, fromdays, fromhours, fromminutes, and so on.2. Implement gravity sensing for Windows Phone 7

[IOS] comparison of Lua scripting with corona SDK, wax and kobold2d

LinkToOriginal: Http://www.learn-cocos2d.com/2011/08/comparison-lua-scripting-corona-sdk-wax-kobold2d/comment-page-1/#comment-232193 This kobold2d FAQ article explains the difference between Corona SDK and iPhone wax library, and evaluates the existing and future options for Lua scripting in kobold2d.About corona SDK The corona SDK exposes a well-designed API in Lua for app and game development. this API is naturally different from the ios sdk since corona is also a cross-platform game engine, e

Collection of Windows Phone 7 outstanding Open Source Projects

Silverlight/WPF extension of ArcGIS API. Currently, Windows Phone 7 is supported. It contains a large number of controls, widgets and tools. Writeablebitmapex: This is a series of extensions of the writeablebitmap class in Silverlight. It supports the Windows Phone 7 platform. Windows Phone 7 accelerometer simulator kit: This is a class library that allows you to experience Gravity Sensors in Windows Phone 7 simulators. WP7 GPS simulat

Parse how to add the gsensor Driver (MMA7660) to android)

the option to automatically fail. Therefore, we also need to modify the Kconfig file.5. Modify kernel/driver/misc/Kconfig and add the following content under menuconfig MISC_DEVICES:Copy codeThe Code is as follows: config SENSORS_MMA7660Tristate "MEMSIC Accelerometer Sensor MMA7660 Driver Support"Depends on I2CHelpIf you say yes here you get support for the MEMSIC accelerometer sensor 6. Because gsensor is

About the classes used by the Cocos2d-x physics engine and the use

In fact, this is the three classes of Physicsworld class, Physicsbody class, Physicsshape class.1.PhysicsWorld classThe Physicsworld object represents the physical world in Cocos2d-x, a world that can be used to simulate collisions and other physical properties. Instead of creating a Physicsworld object directly, it is recommended to get the Physicsworld object from a Scene object, Scene->getphysicsworld ().2.PhysicsBody classThe Physicsbody object represents a rigid body in the physical world,

Event handling and responder chain

In iOS, the event Uievent class indicates that when an event occurs, the system collects related event information, creates an Uievent object, and finally forwards the event to the Application object (uiapplication). In daily life, there are three main types of events: Touch events, accelerometer events, and remote control events. Here is an official picture:When a user triggers an event by doing so, the corresponding event object is added to the UIAp

Virtual reality and augmented reality (spectacles or helmets) status and future-introduction

information of the object can be obtained.This module is responsible for a large number of responsibilities, including gesture recognition, QR code (one of two-dimensional code) tracking, feature tracking, inertial measurement unit, which is the core input components of the glasses.Finally, some official parameters are given:Dual 960x540 pixel through Tft LCD display, 23° Vision 720p RGB camera X-ray infrared depth detection camera tri-axis accelerometer

Android device information, sensor detection

("Cat/sys/class/net/wlan0/address"); InputStreamReader ir=NewInputStreamReader (Pp.getinputstream ()); LineNumberReader input=NewLineNumberReader (IR); for(;NULL!=str;) {STR=Input.readline (); if(str! =NULL) {macserial= Str.trim ();//Go to Space Break; } } } Catch(IOException ex) {//give default valuesEx.printstacktrace (); } returnmacserial; }Third, get all the sensors inside the device: The sensors included in the Android API haveType_acceleromete

21 free resources and tools necessary for Android development

inductive simulator allows you to simulate accelerometer, compass, and direction sensing, which can be used in Android applications and controlled by sensors.6, Droidex: Big (Giant) screen on the Android projectOriginal address:http://github.com/commonsguy/droidexDroidex lets you copy the display contents of your attached Android device to your dev screen. It is very useful to use Droidex to make a presentation. Because you can connect your Android d

Events in iOS

Events in iOS A variety of events occur during the user's use of the app Events in iOS can be divided into 3 major types--Touch Event ———— Accelerometer Event ———— Remote control event- Responder Object Not all objects in iOS can handle events, only objects that inherit Uiresponder can receive and handle events. We call it "responder object." UIApplication, Uiviewcontroller, and UIView inherit from Uiresponder, so they a

HTML5 shaking a shake the exploration of a failure in the strengthened edition

(function() {that.shakeEffect.className= ' Shake-box '; },4000);} that.last_x=That.x; That.last_y=That.y; That.last_z=that.z; } };principle: To scan the accelerometer at 100ms intervals, when the acceleration mutation is detected (the rate of change is greater than the threshold), it can be assumed that the mobile phone is swinging at this time. as can be seen from the formula, the acceleration is detected in 3 directions, so the shaking effec

Android Application Development practices

is 45, we cannot determine whether the phone is tilted up or down. At this time, the acceleration sensor will be used. It can determine the positive and negative angle, positive value indicates from the horizontal line up, copy indicates from the horizontal line down. In short, everything we need can be obtained from the accelerometer. So far, we have introduced all the tools required to build your own Augmented Reality Technology engine. You still n

Android action sensor and android Sensor

. SENSOR_DELAY_UI sampling frequency mSensorManager. registerListener (this, mSensorManager. getdefasensensor (Sensor. TYPE_GRAVITY), // gravity sensor, SensorManager. SENSOR_DELAY_FASTEST); // SensorManager. SENSOR_DELAY_UI sampling frequency mSensorManager. registerListener (this, mSensorManager. getdefasensensor (Sensor. TYPE_PROXIMITY), // adjacent sensor SensorManager. SENSOR_DELAY_UI) ;}@ Override protected void onPause () {super. onPause (); mSensorManager. unregisterListener (this); // u

Android Reverse engineering tools

layout r Endering is do via Web views instead of the platform ' s native UI framework) nor purely web-based (because they was not J UST Web Apps, but is packaged as apps for distribution and has access to native device APIs). Mixing native and hybrid code snippets has been possible since version 1.9.......The core of Apache Cordova applications use CSS3 and HTML5 for their rendering and JavaScript for their logic. HTML5 provides access to underlying hardware such as the

What are the applications of sensing technology on drones?

circuits. This type of“Diving Board"motion alters the movement of the current in the structure, thus indicating the displacement change associated with gravity. another kind of accelerometer technology for the thermal convection technology, has several obvious advantages. it has no moving parts, but a“Hot Gas Regiment"the displacement to perceive the motion changes. This type of sensor is highly sensitive and plays a vital role in stabilizing applica

iOS Development-responder chain

of the search for the first responder, which is discarded if neither the UIWindow singleton nor the uiapplication can handle the event. ***Description1. If the final hit-test does not find the first responder, or if the first responder does not handle the event, the event will go up backwards along the responder chain, and the event will be discarded if neither the UIWindow instance nor the UIApplication instance can handle the event;2. Hittest:withevent: The method ignores the view that hides

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